1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b2f25c78d35000defbe09077bf99cb77160d8ba8953d4d46cbcf21de89a40. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/798a50e0-d3a8-4315-8ffa-728b70254c3b.json and https://artists.proofprofile.net/proofs/artist/798a50e0-d3a8-4315-8ffa-728b70254c3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Fleur du Souvenir (la musique du spectacle)
Le Choix des Armes (la musique du spectacle)
Le Livre des Rêves (la musique du spectacle)
Le Grand Hiver (la musique du spectacle)
Le Secret d'Amboise (la musique du spectacle)